Interpenetrating Networks Obtained by Crosslinking in the Vinylacetate (VAc)-Triethoxyvinylsilane (VTES)-Tetraethoxysilane (TEOS) System |
| |
| Authors: | Dan Donescu Sever Serban Lia Stanciu Ana Braileanu Maria Zaharescu |
| |
| Institution: | (1) Chemical Research Institute, 202 Splaiul Independentei, 77208 Bucharest, Romania;(2) Institute of Physical Chemistry  I.G. Murgulescu, , Romanian Academy, 202 Splaiul Independentei, 77208 Bucharest, Romania;(3) Institute of Physical Chemistry I.G. Murgulescu,, Romanian Academy, 202 Splaiul Independentei, 77208 Bucharest, Romania |
| |
| Abstract: | In the present work the sol-gel process in the ternary system VAc-VTES-TEOS was approached. The monomer that ensures the crosslinking of the obtained networks is VTES, which could react with VAc by free-radical polymerisation and with TEOS by hydrolysis-polycondensation. The early stage evolution of the process was monitored by gas chromatography coupled with mass spectrometry (GC-MS). The gels obtained were characterised by IR spectroscopy, DTA/TG analysis and DSC measurements. Important differences in the gelling process and in the properties of the obtained gels could be noticed, related to the presence of VAc and VTES in the reaction mixtures. The investigation allowed to establish the compositions and the experimental conditions in which gels with high degree of crosslinking could be obtained. |
| |
| Keywords: | interpenetrating networks sol-gel vinylacetate tetraethoxysilane vinyl-triethoxysilane |
| 本文献已被 SpringerLink 等数据库收录！ |
|
